I was looking at the guide by Extreme Networks on setting up BGP (
https://www.youtube.com/playlist?list=PLF2BB0964BEE78586) and the IP's which are being routed to the BGP neighbour were added on loopback VLAN's.
At the moment, I have a number of servers connected to the Default VLAN and they are using IP's routed from our Datacentre through port 1.
What I want to do is also perform a BGP session over this existing link on port 1 with the Datacentre for peering and announcing our new /22 IP range. They have said this is possible.
So what I want to do first is setup the gateway's before performing the BGP configuration.
Should I just add these gateway's to the Default VLAN as secondary IP's? That way they are pingable on the Default VLAN.
The issue is that I need the existing IP's to still be usable in the Default VLAN, along with the new IP's I am announcing.
I think your second solution is good, however this is currently a production environment and making changes is difficult.
I will be switching servers soon, so installing the new servers in a separate VLAN may be a good idea. If I create a VLAN for the new servers, and enable ip forwarding on that VLAN and the Default VLAN, the 2 should be able to communicate?
Thanks for all the help.